<?php
/**
 * Smarty Internal Plugin Template
 *
 * This file contains the Smarty template engine
 *
 * @package Smarty
 * @subpackage Template
 * @author Uwe Tews
 */

/**
 * Main class with template data structures and methods
 *
 * @package Smarty
 * @subpackage Template
 *            
 * @property Smarty_Template_Source $source
 * @property Smarty_Template_Compiled $compiled
 * @property Smarty_Template_Cached $cached
 */
class Smarty_Internal_Template extends Smarty_Internal_TemplateBase {
	
	/**
	 * cache_id
	 * 
	 * @var string
	 */
	public $cache_id = null;
	/**
	 * $compile_id
	 * 
	 * @var string
	 */
	public $compile_id = null;
	/**
	 * caching enabled
	 * 
	 * @var boolean
	 */
	public $caching = null;
	/**
	 * cache lifetime in seconds
	 * 
	 * @var integer
	 */
	public $cache_lifetime = null;
	/**
	 * Template resource
	 * 
	 * @var string
	 */
	public $template_resource = null;
	/**
	 * flag if compiled template is invalid and must be (re)compiled
	 * 
	 * @var bool
	 */
	public $mustCompile = null;
	/**
	 * flag if template does contain nocache code sections
	 * 
	 * @var bool
	 */
	public $has_nocache_code = false;
	/**
	 * special compiled and cached template properties
	 * 
	 * @var array
	 */
	public $properties = array ('file_dependency' => array (), 'nocache_hash' => '', 'function' => array () );
	/**
	 * required plugins
	 * 
	 * @var array
	 */
	public $required_plugins = array ('compiled' => array (), 'nocache' => array () );
	/**
	 * Global smarty instance
	 * 
	 * @var Smarty
	 */
	public $smarty = null;
	/**
	 * blocks for template inheritance
	 * 
	 * @var array
	 */
	public $block_data = array ();
	/**
	 * variable filters
	 * 
	 * @var array
	 */
	public $variable_filters = array ();
	/**
	 * optional log of tag/attributes
	 * 
	 * @var array
	 */
	public $used_tags = array ();
	/**
	 * internal flag to allow relative path in child template blocks
	 * 
	 * @var bool
	 */
	public $allow_relative_path = false;
	/**
	 * internal capture runtime stack
	 * 
	 * @var array
	 */
	public $_capture_stack = array (0 => array () );
	
	/**
	 * Create template data object
	 *
	 * Some of the global Smarty settings copied to template scope
	 * It load the required template resources and cacher plugins
	 *
	 * @param $template_resource string
	 *       	 template resource string
	 * @param $smarty Smarty
	 *       	 Smarty instance
	 * @param $_parent Smarty_Internal_Template
	 *       	 back pointer to parent object with variables or null
	 * @param $_cache_id mixed
	 *       	 cache id or null
	 * @param $_compile_id mixed
	 *       	 compile id or null
	 * @param $_caching bool
	 *       	 use caching?
	 * @param $_cache_lifetime int
	 *       	 cache life-time in seconds
	 */
	public function __construct($template_resource, $smarty, $_parent = null, $_cache_id = null, $_compile_id = null, $_caching = null, $_cache_lifetime = null) {
		$this->smarty = &$smarty;
		// Smarty parameter
		$this->cache_id = $_cache_id === null ? $this->smarty->cache_id : $_cache_id;
		$this->compile_id = $_compile_id === null ? $this->smarty->compile_id : $_compile_id;
		$this->caching = $_caching === null ? $this->smarty->caching : $_caching;
		if ($this->caching === true)
			$this->caching = Smarty::CACHING_LIFETIME_CURRENT;
		$this->cache_lifetime = $_cache_lifetime === null ? $this->smarty->cache_lifetime : $_cache_lifetime;
		$this->parent = $_parent;
		// Template resource
		$this->template_resource = $template_resource;
		// copy block data of template inheritance
		if ($this->parent instanceof Smarty_Internal_Template) {
			$this->block_data = $this->parent->block_data;
		}
	}
	
	/**
	 * Returns if the current template must be compiled by the Smarty compiler
	 *
	 * It does compare the timestamps of template source and the compiled
	 * templates and checks the force compile configuration
	 *
	 * @return boolean true if the template must be compiled
	 */
	public function mustCompile() {
		if (! $this->source->exists) {
			if ($this->parent instanceof Smarty_Internal_Template) {
				$parent_resource = " in '$this->parent->template_resource}'";
			} else {
				$parent_resource = '';
			}
			throw new SmartyException ( "Unable to load template {$this->source->type} '{$this->source->name}'{$parent_resource}" );
		}
		if ($this->mustCompile === null) {
			$this->mustCompile = (! $this->source->uncompiled && ($this->smarty->force_compile || $this->source->recompiled || $this->compiled->timestamp === false || ($this->smarty->compile_check && $this->compiled->timestamp < $this->source->timestamp)));
		}
		return $this->mustCompile;
	}
	
	/**
	 * Compiles the template
	 *
	 * If the template is not evaluated the compiled template is saved on disk
	 */
	public function compileTemplateSource() {
		if (! $this->source->recompiled) {
			$this->properties ['file_dependency'] = array ();
			if ($this->source->components) {
				// uses real resource for file dependency
				$source = end ( $this->source->components );
				$this->properties ['file_dependency'] [$this->source->uid] = array ($this->source->filepath, $this->source->timestamp, $source->type );
			} else {
				$this->properties ['file_dependency'] [$this->source->uid] = array ($this->source->filepath, $this->source->timestamp, $this->source->type );
			}
		}
		if ($this->smarty->debugging) {
			Smarty_Internal_Debug::start_compile ( $this );
		}
		// compile locking
		if ($this->smarty->compile_locking && ! $this->source->recompiled) {
			if ($saved_timestamp = $this->compiled->timestamp) {
				touch ( $this->compiled->filepath );
			}
		}
		// call compiler
		try {
			$code = $this->compiler->compileTemplate ( $this );
		} catch ( Exception $e ) {
			// restore old timestamp in case of error
			if ($this->smarty->compile_locking && ! $this->source->recompiled && $saved_timestamp) {
				touch ( $this->compiled->filepath, $saved_timestamp );
			}
			throw $e;
		}
		// compiling succeded
		if (! $this->source->recompiled && $this->compiler->write_compiled_code) {
			// write compiled template
			$_filepath = $this->compiled->filepath;
			if ($_filepath === false)
				throw new SmartyException ( 'getCompiledFilepath() did not return a destination to save the compiled template to' );
			Smarty_Internal_Write_File::writeFile ( $_filepath, $code, $this->smarty );
			$this->compiled->exists = true;
			$this->compiled->isCompiled = true;
		}
		if ($this->smarty->debugging) {
			Smarty_Internal_Debug::end_compile ( $this );
		}
		// release compiler object to free memory
		unset ( $this->compiler );
	}
	
	/**
	 * Writes the cached template output
	 *
	 * @return bool
	 */
	public function writeCachedContent($content) {
		if ($this->source->recompiled || ! ($this->caching == Smarty::CACHING_LIFETIME_CURRENT || $this->caching == Smarty::CACHING_LIFETIME_SAVED)) {
			// don't write cache file
			return false;
		}
		$this->properties ['cache_lifetime'] = $this->cache_lifetime;
		$this->properties ['unifunc'] = 'content_' . uniqid ( '', false );
		$content = $this->createTemplateCodeFrame ( $content, true );
		$_smarty_tpl = $this;
		eval ( "?>" . $content );
		$this->cached->valid = true;
		$this->cached->processed = true;
		return $this->cached->write ( $this, $content );
	}
	
	/**
	 * Template code runtime function to get subtemplate content
	 *
	 * @param $template string
	 *       	 the resource handle of the template file
	 * @param $cache_id mixed
	 *       	 cache id to be used with this template
	 * @param $compile_id mixed
	 *       	 compile id to be used with this template
	 * @param $caching integer
	 *       	 cache mode
	 * @param $cache_lifetime integer
	 *       	 life time of cache data
	 * @param $vars array
	 *       	 optional variables to assign
	 * @param $parent_scope int
	 *       	 scope in which {include} should execute
	 * @return s string template content
	 */
	public function getSubTemplate($template, $cache_id, $compile_id, $caching, $cache_lifetime, $data, $parent_scope) {
		// already in template cache?
		if ($this->smarty->allow_ambiguous_resources) {
			$_templateId = Smarty_Resource::getUniqueTemplateName ( $this->smarty, $template ) . $cache_id . $compile_id;
		} else {
			$_templateId = $this->smarty->joined_template_dir . '#' . $template . $cache_id . $compile_id;
		}
		
		if (isset ( $_templateId [150] )) {
			$_templateId = sha1 ( $_templateId );
		}
		if (isset ( $this->smarty->template_objects [$_templateId] )) {
			// clone cached template object because of possible recursive call
			$tpl = clone $this->smarty->template_objects [$_templateId];
			$tpl->parent = $this;
			$tpl->caching = $caching;
			$tpl->cache_lifetime = $cache_lifetime;
		} else {
			$tpl = new $this->smarty->template_class ( $template, $this->smarty, $this, $cache_id, $compile_id, $caching, $cache_lifetime );
		}
		// get variables from calling scope
		if ($parent_scope == Smarty::SCOPE_LOCAL) {
			$tpl->tpl_vars = $this->tpl_vars;
		} elseif ($parent_scope == Smarty::SCOPE_PARENT) {
			$tpl->tpl_vars = &$this->tpl_vars;
		} elseif ($parent_scope == Smarty::SCOPE_GLOBAL) {
			$tpl->tpl_vars = &Smarty::$global_tpl_vars;
		} elseif (($scope_ptr = $this->getScopePointer ( $parent_scope )) == null) {
			$tpl->tpl_vars = &$this->tpl_vars;
		} else {
			$tpl->tpl_vars = &$scope_ptr->tpl_vars;
		}
		$tpl->config_vars = $this->config_vars;
		if (! empty ( $data )) {
			// set up variable values
			foreach ( $data as $_key => $_val ) {
				$tpl->tpl_vars [$_key] = new Smarty_variable ( $_val );
			}
		}
		return $tpl->fetch ( null, null, null, null, false, false, true );
	}
	
	/**
	 * Template code runtime function to set up an inline subtemplate
	 *
	 * @param $template string
	 *       	 the resource handle of the template file
	 * @param $cache_id mixed
	 *       	 cache id to be used with this template
	 * @param $compile_id mixed
	 *       	 compile id to be used with this template
	 * @param $caching integer
	 *       	 cache mode
	 * @param $cache_lifetime integer
	 *       	 life time of cache data
	 * @param $vars array
	 *       	 optional variables to assign
	 * @param $parent_scope int
	 *       	 scope in which {include} should execute
	 * @param $hash string
	 *       	 nocache hash code
	 * @return s string template content
	 */
	public function setupInlineSubTemplate($template, $cache_id, $compile_id, $caching, $cache_lifetime, $data, $parent_scope, $hash) {
		$tpl = new $this->smarty->template_class ( $template, $this->smarty, $this, $cache_id, $compile_id, $caching, $cache_lifetime );
		$tpl->properties ['nocache_hash'] = $hash;
		// get variables from calling scope
		if ($parent_scope == Smarty::SCOPE_LOCAL) {
			$tpl->tpl_vars = $this->tpl_vars;
		} elseif ($parent_scope == Smarty::SCOPE_PARENT) {
			$tpl->tpl_vars = &$this->tpl_vars;
		} elseif ($parent_scope == Smarty::SCOPE_GLOBAL) {
			$tpl->tpl_vars = &Smarty::$global_tpl_vars;
		} elseif (($scope_ptr = $this->getScopePointer ( $parent_scope )) == null) {
			$tpl->tpl_vars = &$this->tpl_vars;
		} else {
			$tpl->tpl_vars = &$scope_ptr->tpl_vars;
		}
		$tpl->config_vars = $this->config_vars;
		if (! empty ( $data )) {
			// set up variable values
			foreach ( $data as $_key => $_val ) {
				$tpl->tpl_vars [$_key] = new Smarty_variable ( $_val );
			}
		}
		return $tpl;
	}
	
	/**
	 * Create code frame for compiled and cached templates
	 *
	 * @param $content string
	 *       	 optional template content
	 * @param $cache bool
	 *       	 flag for cache file
	 * @return string
	 */
	public function createTemplateCodeFrame($content = '', $cache = false) {
		$plugins_string = '';
		// include code for plugins
		if (! $cache) {
			if (! empty ( $this->required_plugins ['compiled'] )) {
				$plugins_string = '<?php ';
				foreach ( $this->required_plugins ['compiled'] as $tmp ) {
					foreach ( $tmp as $data ) {
						$file = addslashes ( $data ['file'] );
						$plugins_string .= "if (!is_callable('{$data['function']}')) include '{$file}';\n";
					}
				}
				$plugins_string .= '?>';
			}
			if (! empty ( $this->required_plugins ['nocache'] )) {
				$this->has_nocache_code = true;
				$plugins_string .= "<?php echo '/*%%SmartyNocache:{$this->properties['nocache_hash']}%%*/<?php \$_smarty = \$_smarty_tpl->smarty; ";
				foreach ( $this->required_plugins ['nocache'] as $tmp ) {
					foreach ( $tmp as $data ) {
						$file = addslashes ( $data ['file'] );
						$plugins_string .= addslashes ( "if (!is_callable('{$data['function']}')) include '{$file}';\n" );
					}
				}
				$plugins_string .= "?>/*/%%SmartyNocache:{$this->properties['nocache_hash']}%%*/';?>\n";
			}
		}
		// build property code
		$this->properties ['has_nocache_code'] = $this->has_nocache_code;
		$output = '';
		if (! $this->source->recompiled) {
			$output = "<?php /*%%SmartyHeaderCode:{$this->properties['nocache_hash']}%%*/";
			if ($this->smarty->direct_access_security) {
				$output .= "if(!defined('SMARTY_DIR')) exit('no direct access allowed');\n";
			}
		}
		if ($cache) {
			// remove compiled code of{function} definition
			unset ( $this->properties ['function'] );
			if (! empty ( $this->smarty->template_functions )) {
				// copy code of {function} tags called in nocache mode
				foreach ( $this->smarty->template_functions as $name => $function_data ) {
					if (isset ( $function_data ['called_nocache'] )) {
						foreach ( $function_data ['called_functions'] as $func_name ) {
							$this->smarty->template_functions [$func_name] ['called_nocache'] = true;
						}
					}
				}
				foreach ( $this->smarty->template_functions as $name => $function_data ) {
					if (isset ( $function_data ['called_nocache'] )) {
						unset ( $function_data ['called_nocache'], $function_data ['called_functions'], $this->smarty->template_functions [$name] ['called_nocache'] );
						$this->properties ['function'] [$name] = $function_data;
					}
				}
			}
		}
		$this->properties ['version'] = Smarty::SMARTY_VERSION;
		if (! isset ( $this->properties ['unifunc'] )) {
			$this->properties ['unifunc'] = 'content_' . uniqid ( '', false );
		}
		if (! $this->source->recompiled) {
			$output .= "\$_valid = \$_smarty_tpl->decodeProperties(" . var_export ( $this->properties, true ) . ',' . ($cache ? 'true' : 'false') . "); /*/%%SmartyHeaderCode%%*/?>\n";
		}
		if (! $this->source->recompiled) {
			$output .= '<?php if ($_valid && !is_callable(\'' . $this->properties ['unifunc'] . '\')) {function ' . $this->properties ['unifunc'] . '($_smarty_tpl) {?>';
		}
		$output .= $plugins_string;
		$output .= $content;
		if (! $this->source->recompiled) {
			$output .= '<?php }} ?>';
		}
		return $output;
	}
	
	/**
	 * This function is executed automatically when a compiled or cached
	 * template file is included
	 *
	 * - Decode saved properties from compiled template and cache files
	 * - Check if compiled or cache file is valid
	 *
	 * @param $properties array
	 *       	 special template properties
	 * @param $cache bool
	 *       	 flag if called from cache file
	 * @return bool flag if compiled or cache file is valid
	 */
	public function decodeProperties($properties, $cache = false) {
		$this->has_nocache_code = $properties ['has_nocache_code'];
		$this->properties ['nocache_hash'] = $properties ['nocache_hash'];
		if (isset ( $properties ['cache_lifetime'] )) {
			$this->properties ['cache_lifetime'] = $properties ['cache_lifetime'];
		}
		if (isset ( $properties ['file_dependency'] )) {
			$this->properties ['file_dependency'] = array_merge ( $this->properties ['file_dependency'], $properties ['file_dependency'] );
		}
		if (! empty ( $properties ['function'] )) {
			$this->properties ['function'] = array_merge ( $this->properties ['function'], $properties ['function'] );
			$this->smarty->template_functions = array_merge ( $this->smarty->template_functions, $properties ['function'] );
		}
		$this->properties ['version'] = (isset ( $properties ['version'] )) ? $properties ['version'] : '';
		$this->properties ['unifunc'] = $properties ['unifunc'];
		// check file dependencies at compiled code
		$is_valid = true;
		if ($this->properties ['version'] != Smarty::SMARTY_VERSION) {
			$is_valid = false;
		} else if (((! $cache && $this->smarty->compile_check && empty ( $this->compiled->_properties ) && ! $this->compiled->isCompiled) || $cache && ($this->smarty->compile_check === true || $this->smarty->compile_check === Smarty::COMPILECHECK_ON)) && ! empty ( $this->properties ['file_dependency'] )) {
			foreach ( $this->properties ['file_dependency'] as $_file_to_check ) {
				if ($_file_to_check [2] == 'file' || $_file_to_check [2] == 'php') {
					if ($this->source->filepath == $_file_to_check [0] && isset ( $this->source->timestamp )) {
						// do not recheck current template
						$mtime = $this->source->timestamp;
					} else {
						// file and php types can be checked without loading the
						// respective resource handlers
						$mtime = filemtime ( $_file_to_check [0] );
					}
				} elseif ($_file_to_check [2] == 'string') {
					continue;
				} else {
					$source = Smarty_Resource::source ( null, $this->smarty, $_file_to_check [0] );
					$mtime = $source->timestamp;
				}
				if ($mtime > $_file_to_check [1]) {
					$is_valid = false;
					break;
				}
			}
		}
		if ($cache) {
			$this->cached->valid = $is_valid;
		} else {
			$this->mustCompile = ! $is_valid;
		}
		// store data in reusable Smarty_Template_Compiled
		if (! $cache) {
			$this->compiled->_properties = $properties;
		}
		return $is_valid;
	}
	
	/**
	 * Template code runtime function to create a local Smarty variable for
	 * array assignments
	 *
	 * @param $tpl_var string
	 *       	 tempate variable name
	 * @param $nocache bool
	 *       	 cache mode of variable
	 * @param $scope int
	 *       	 scope of variable
	 */
	public function createLocalArrayVariable($tpl_var, $nocache = false, $scope = Smarty::SCOPE_LOCAL) {
		if (! isset ( $this->tpl_vars [$tpl_var] )) {
			$this->tpl_vars [$tpl_var] = new Smarty_variable ( array (), $nocache, $scope );
		} else {
			$this->tpl_vars [$tpl_var] = clone $this->tpl_vars [$tpl_var];
			if ($scope != Smarty::SCOPE_LOCAL) {
				$this->tpl_vars [$tpl_var]->scope = $scope;
			}
			if (! (is_array ( $this->tpl_vars [$tpl_var]->value ) || $this->tpl_vars [$tpl_var]->value instanceof ArrayAccess)) {
				settype ( $this->tpl_vars [$tpl_var]->value, 'array' );
			}
		}
	}
	
	/**
	 * Template code runtime function to get pointer to template variable array
	 * of requested scope
	 *
	 * @param $scope int
	 *       	 requested variable scope
	 * @return array array of template variables
	 */
	public function &getScope($scope) {
		if ($scope == Smarty::SCOPE_PARENT && ! empty ( $this->parent )) {
			return $this->parent->tpl_vars;
		} elseif ($scope == Smarty::SCOPE_ROOT && ! empty ( $this->parent )) {
			$ptr = $this->parent;
			while ( ! empty ( $ptr->parent ) ) {
				$ptr = $ptr->parent;
			}
			return $ptr->tpl_vars;
		} elseif ($scope == Smarty::SCOPE_GLOBAL) {
			return Smarty::$global_tpl_vars;
		}
		$null = null;
		return $null;
	}
	
	/**
	 * Get parent or root of template parent chain
	 *
	 * @param $scope int
	 *       	 pqrent or root scope
	 * @return mixed object
	 */
	public function getScopePointer($scope) {
		if ($scope == Smarty::SCOPE_PARENT && ! empty ( $this->parent )) {
			return $this->parent;
		} elseif ($scope == Smarty::SCOPE_ROOT && ! empty ( $this->parent )) {
			$ptr = $this->parent;
			while ( ! empty ( $ptr->parent ) ) {
				$ptr = $ptr->parent;
			}
			return $ptr;
		}
		return null;
	}
	
	/**
	 * [util function] counts an array, arrayaccess/traversable or PDOStatement
	 * object
	 *
	 * @param $value mixed       	
	 * @return int the count for arrays and objects that implement countable, 1
	 *         for other objects that don't, and 0 for empty elements
	 */
	public function _count($value) {
		if (is_array ( $value ) === true || $value instanceof Countable) {
			return count ( $value );
		} elseif ($value instanceof IteratorAggregate) {
			// Note: getIterator() returns a Traversable, not an Iterator
			// thus rewind() and valid() methods may not be present
			return iterator_count ( $value->getIterator () );
		} elseif ($value instanceof Iterator) {
			return iterator_count ( $value );
		} elseif ($value instanceof PDOStatement) {
			return $value->rowCount ();
		} elseif ($value instanceof Traversable) {
			return iterator_count ( $value );
		} elseif ($value instanceof ArrayAccess) {
			if ($value->offsetExists ( 0 )) {
				return 1;
			}
		} elseif (is_object ( $value )) {
			return count ( $value );
		}
		return 0;
	}
	
	/**
	 * runtime error not matching capture tags
	 */
	public function capture_error() {
		throw new SmartyException ( "Not matching {capture} open/close in \"{$this->template_resource}\"" );
	}
	
	/**
	 * Empty cache for this template
	 *
	 * @param $exp_time integer
	 *       	 expiration time
	 * @return integer number of cache files deleted
	 */
	public function clearCache($exp_time = null) {
		Smarty_CacheResource::invalidLoadedCache ( $this->smarty );
		return $this->cached->handler->clear ( $this->smarty, $this->template_name, $this->cache_id, $this->compile_id, $exp_time );
	}
	
	/**
	 * set Smarty property in template context
	 *
	 * @param $property_name string
	 *       	 property name
	 * @param $value mixed
	 *       	 value
	 */
	public function __set($property_name, $value) {
		switch ($property_name) {
			case 'source' :
			case 'compiled' :
			case 'cached' :
			case 'compiler' :
				$this->$property_name = $value;
				return;
			
			// FIXME: routing of template -> smarty attributes
			default :
				if (property_exists ( $this->smarty, $property_name )) {
					$this->smarty->$property_name = $value;
					return;
				}
		}
		
		throw new SmartyException ( "invalid template property '$property_name'." );
	}
	
	/**
	 * get Smarty property in template context
	 *
	 * @param $property_name string
	 *       	 property name
	 */
	public function __get($property_name) {
		switch ($property_name) {
			case 'source' :
				if (empty ( $this->template_resource )) {
					throw new SmartyException ( "Unable to parse resource name \"{$this->template_resource}\"" );
				}
				$this->source = Smarty_Resource::source ( $this );
				// cache template object under a unique ID
				// do not cache eval resources
				if ($this->source->type != 'eval') {
					if ($this->smarty->allow_ambiguous_resources) {
						$_templateId = $this->source->unique_resource . $this->cache_id . $this->compile_id;
					} else {
						$_templateId = $this->smarty->joined_template_dir . '#' . $this->template_resource . $this->cache_id . $this->compile_id;
					}
					
					if (isset ( $_templateId [150] )) {
						$_templateId = sha1 ( $_templateId );
					}
					$this->smarty->template_objects [$_templateId] = $this;
				}
				return $this->source;
			
			case 'compiled' :
				$this->compiled = $this->source->getCompiled ( $this );
				return $this->compiled;
			
			case 'cached' :
				if (! class_exists ( 'Smarty_Template_Cached' )) {
					include SMARTY_SYSPLUGINS_DIR . 'smarty_cacheresource.php';
				}
				$this->cached = new Smarty_Template_Cached ( $this );
				return $this->cached;
			
			case 'compiler' :
				$this->smarty->loadPlugin ( $this->source->compiler_class );
				$this->compiler = new $this->source->compiler_class ( $this->source->template_lexer_class, $this->source->template_parser_class, $this->smarty );
				return $this->compiler;
			
			// FIXME: routing of template -> smarty attributes
			default :
				if (property_exists ( $this->smarty, $property_name )) {
					return $this->smarty->$property_name;
				}
		}
		
		throw new SmartyException ( "template property '$property_name' does not exist." );
	}
	
	/**
	 * Template data object destrutor
	 */
	public function __destruct() {
		if ($this->smarty->cache_locking && isset ( $this->cached ) && $this->cached->is_locked) {
			$this->cached->handler->releaseLock ( $this->smarty, $this->cached );
		}
	}

}

?>